First published online July 13, 2007; 10.1105/tpc.107.050674
The Plant Cell 19:2156-2168 (2007)
© 2007 American Society of Plant Biologists
The Auxin-Regulated AP2/EREBP Gene PUCHI Is Required for Morphogenesis in the Early Lateral Root Primordium of Arabidopsis[W]
Atsuko Hirota,
Takehide Kato,
Hidehiro Fukaki1,
Mitsuhiro Aida and
Masao Tasaka2
Graduate School of Biological Sciences, Nara Institute of Science and Technology, Nara 630-0192, Japan
2 Address correspondence to m-tasaka{at}bs.naist.jp.
Organ primordia develop from founder cells into organs due to coordinated patterns of cell division. How patterned cell division is regulated during organ formation, however, is not well understood. Here, we show that the PUCHI gene, which encodes a putative APETALA2/ethylene-responsive element binding protein transcription factor, is required for the coordinated pattern of cell divisions during lateral root formation in Arabidopsis thaliana. Recessive mutations in PUCHI disturbed cell division patterns in the lateral root primordium, resulting in swelling of the proximal region of lateral roots. PUCHI expression was initially detected in all of the cells in early lateral root primordia, and later it was restricted to the proximal region of the primordia. Stable expression of PUCHI required auxin-responsive elements in its promoter region, and exogenous auxin increased the level of PUCHI mRNA accumulation. These results suggest that PUCHI acts downstream of auxin signaling and that this gene contributes to lateral root morphogenesis through affecting the pattern of cell divisions during the early stages of primordium development.
This article has been cited by other articles:

|
 |

|
 |
 
H. W. Lee, N. Y. Kim, D. J. Lee, and J. Kim
LBD18/ASL20 Regulates Lateral Root Formation in Combination with LBD16/ASL18 Downstream of ARF7 and ARF19 in Arabidopsis
Plant Physiology,
November 1, 2009;
151(3):
1377 - 1389.
[Abstract]
[Full Text]
[PDF]
|
 |
|

|
 |

|
 |
 
D. J. Lee, J. W. Park, H. W. Lee, and J. Kim
Genome-wide analysis of the auxin-responsive transcriptome downstream of iaa1 and its expression analysis reveal the diversity and complexity of auxin-regulated gene expression
J. Exp. Bot.,
September 1, 2009;
60(13):
3935 - 3957.
[Abstract]
[Full Text]
[PDF]
|
 |
|

|
 |

|
 |
 
Md. R. Karim, A. Hirota, D. Kwiatkowska, M. Tasaka, and M. Aida
A Role for Arabidopsis PUCHI in Floral Meristem Identity and Bract Suppression
PLANT CELL,
May 1, 2009;
21(5):
1360 - 1372.
[Abstract]
[Full Text]
[PDF]
|
 |
|

|
 |

|
 |
 
G. Bertoni
PUCHI and Floral Meristem Identity
PLANT CELL,
May 1, 2009;
21(5):
1327 - 1327.
[Full Text]
[PDF]
|
 |
|

|
 |

|
 |
 
S. Miyashima, T. Hashimoto, and K. Nakajima
ARGONAUTE1 Acts in Arabidopsis Root Radial Pattern Formation Independently of the SHR/SCR Pathway
Plant Cell Physiol.,
March 1, 2009;
50(3):
626 - 634.
[Abstract]
[Full Text]
[PDF]
|
 |
|

|
 |

|
 |
 
K. Guo, K. Xia, and Z.-M. Yang
Regulation of tomato lateral root development by carbon monoxide and involvement in auxin and nitric oxide
J. Exp. Bot.,
September 1, 2008;
59(12):
3443 - 3452.
[Abstract]
[Full Text]
[PDF]
|
 |
|

|
 |

|
 |
 
S. Lau, G. Jurgens, and I. De Smet
The Evolving Complexity of the Auxin Pathway
PLANT CELL,
July 1, 2008;
20(7):
1738 - 1746.
[Full Text]
[PDF]
|
 |
|

|
 |

|
 |
 
S. Taketa, S. Amano, Y. Tsujino, T. Sato, D. Saisho, K. Kakeda, M. Nomura, T. Suzuki, T. Matsumoto, K. Sato, et al.
Barley grain with adhering hulls is controlled by an ERF family transcription factor gene regulating a lipid biosynthesis pathway
PNAS,
March 11, 2008;
105(10):
4062 - 4067.
[Abstract]
[Full Text]
[PDF]
|
 |
|
|
|